电子科技大学学报
電子科技大學學報
전자과기대학학보
JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
2013年
6期
895-899,925
,共6页
后向散射系数%蒙特卡洛%参数敏感性%水稻%散射计
後嚮散射繫數%矇特卡洛%參數敏感性%水稻%散射計
후향산사계수%몽특잡락%삼수민감성%수도%산사계
backscattering coefficient%Monte Carlo method%parameter sensitivity%rice%scatterometer
根据蒙特卡洛方法建立的水稻微波散射模型,针对水稻的生长特征对模型进行了修正,利用散射计实测数据验证了修正后模型模拟结果的准确性。结果表明,基于蒙特卡洛方法建立的水稻后向散射模型能够很好地模拟水稻的后向散射特征。根据水稻生长参数实测数据设定模型输入参数的变化范围,模拟不同输入参数对应的水稻后向散射系数,获得了系统参数、稻杆和稻叶等水稻生长参数与后向散射系数之间的定量关系,并针对各类参数进行了敏感性分析。
根據矇特卡洛方法建立的水稻微波散射模型,針對水稻的生長特徵對模型進行瞭脩正,利用散射計實測數據驗證瞭脩正後模型模擬結果的準確性。結果錶明,基于矇特卡洛方法建立的水稻後嚮散射模型能夠很好地模擬水稻的後嚮散射特徵。根據水稻生長參數實測數據設定模型輸入參數的變化範圍,模擬不同輸入參數對應的水稻後嚮散射繫數,穫得瞭繫統參數、稻桿和稻葉等水稻生長參數與後嚮散射繫數之間的定量關繫,併針對各類參數進行瞭敏感性分析。
근거몽특잡락방법건립적수도미파산사모형,침대수도적생장특정대모형진행료수정,이용산사계실측수거험증료수정후모형모의결과적준학성。결과표명,기우몽특잡락방법건립적수도후향산사모형능구흔호지모의수도적후향산사특정。근거수도생장삼수실측수거설정모형수입삼수적변화범위,모의불동수입삼수대응적수도후향산사계수,획득료계통삼수、도간화도협등수도생장삼수여후향산사계수지간적정량관계,병침대각류삼수진행료민감성분석。
This paper establishes rice microwave scattering model according to the Monte Carlo method, and modifies the model to meet the rice growth characteristics. The model simulation results were compared with scatterometer measured data, the result show that the proposed rice backscatter model can well simulate the backscattering characteristics of rice. The variation ranges of input parameters of the model were set according to the actual growth parameters of rice. The rice backscattering coefficients with different input parameters, such as rice straw and rice leaf parameter, were simulated. Finally, the sensitivity analysis according to the rice backscattering coefficient and growth parameters is presented.